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Fabrication of Barrier Ribs for PDP by Capillary Infiltration Process and Their Sintering Behavior Yong Seog Kim1,Chan Hyoung Kang2,Hak Nynu Choi1,Tae Jung Tang1 (1.Department of Materials Science and Engineering,Hongik University,Seoul 121-791,Korea;2.Department of Advanced Materials Engineering,Korea Polytechnic University Shihung-City,Kyonggi-Do,Korea) Abstract:Closed-cell type barrier ribs......
of Petrochemical Technology, Beijing 102617, China Received 15 July 2007; accepted 10 September 2007 Abstract: The NiCrAlY+ZrO2 thermal barrier coating was prepared on the surface of TiAl alloy by plasma... sprayed samples at 850℃ was investigated. The results show that the bonding between thermal barrier coating and substrate is very good. Surface hardness of TiAl alloy is improved too. The microhardness......
Numerical investigation into effect of rear barrier pillar onstress distribution around a longwall faceJU Ming-he(鞠明和)1, 2, LI Xue-hua(李学华)1, 2, YAO Qiang-ling(姚强岭)1, 2, LI Dong-wei(李冬伟)1, 2, CHONG...), Xuzhou 221008, China)Abstract:Numerical investigation was performed to examine the effect of rear barrier pillar on stress distribution around a longwall face. Salamon theoretical formula was used......
Influence of heat treatment on nanocrystalline zirconia powder and plasma-sprayed thermal barrier coatings JIANG Xian-liang(蒋显亮)1, LIU Chun-bo(刘纯波)1, LIU Min(刘 敏)2, ZHU Hui-zhao(朱晖朝)2 1. School... and conventional thermal barrier coatings were heat-treated at temperature varying from 1050 to 1 250 oC for 2-20 h. The results show that obvious grain growth was found in both nanostructured......
Fracture of thermal barrier coating with multiple surface cracks and delaminations: Interlayer effectFAN Xue-ling(范学领)1, XU Rong(许荣)1, M. Kikuchi2(1. State Key Laboratory for Strength and Vibration... that the interlayer constraint has significant effect on the ERR and thus coating life, which can be adopted to modify the ceramic top coat.Key words:thermal barrier coating; delamination; interlayer......
Structural Analysis and Electrical Property of Tungsten Bronze Prepared by Rare Earth Gaseous Permeation 韦永德1,陈刚1,李中华1,苏铭汉1,李昕1 (1.Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China) Abstract:The cubic sodium tungsten bronzes, NaxWO3(x=0.854 and 0.814)were prepared by rare earths gaseous permeation method. Structural analysis was carried out by Rietveld......
High Temperature Gaseous Rare-Earth Permeation of Polyoxotungstates:An New Effective Method for the Preparation of Tungsten Bronzes 郭元茹1,韦永德1,李中华1,周百斌1 (1.Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China) Abstract:New polyoxometalate α-K12H3[Y(BW11O39)2]·25H2O was synthesized and treated by high temperature gaseous rare earth permeation to prepare tungsten......
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产实践中.由于微合金化元素的加入量很少,一般可以推断其工作机理应与固溶强化关系不大,而主要与形核和长大,以及与位错,亚结构,或界面等发生的相互作用有关. 镍基合金高温热障涂层(Thermal barrier coatings, TBCs)在航空发动机,燃气轮机,和高温固体燃料电池等众多重要材料系统中发挥着关键性作用.在涂层制备或服役过程中,在镍基过渡层合金(Bond coat, BC)表面逐渐形成...). REFERENCES [1] EVANS A G, MUMM D R, HUTCHINSON J W, MEIER G H, PETTIT F S. Mechanisms controlling the durability of thermal barrier coatings[J]. Progress in Materials Science, 2001, 46(5): 505-553. [2......
Hydrogen Embrittlement Processes and Al/Al2O3 Hydrogen Resistance Coatings of NdFeB Magnets 蒋洪川1,张文旭1,彭斌1,张万里1,杨仕清1 (1.School of Microelectronics and Solid-State Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China) Abstract:After analyzing the phenomena and processes of hydrogen embrittlement of NdFeB permanent magnets,RF magnetron sputtering was used......
